* Open face all mountain design* 19 vents* ConeHead Technology utilizing dual density foams in impact absorbing zones* Full rear coverage* Boa one hand dial fit adjustment* Adjustable visor* Rapid adjust chin strap* Certified : CPSC Bike* XS/S (XSS): 52-55 cm, M/L (ML): 56-59cm, XL/XXL (XL): 60-63cm